New Holland 615, 616, 617 Disc Mower Pdf Repair Service Manual (p. Nb. 86578412)

New Holland 615, 616, 617 Disc Mower PDF Repair Service Manual (Publication No. 86578412)

The New Holland 615, 616 and 617 Disc Mowers are designed to deliver reliable cutting performance for hay producers, livestock farms and commercial forage operations. Featuring a robust disc cutterbar, heavy-duty driveline and dependable suspension system, these machines provide fast, clean mowing while maintaining excellent crop quality. Built for demanding field conditions, they offer smooth operation across grass, alfalfa, clover and mixed forage crops with consistent cutting results throughout the harvesting season.

Continuous use places stress on cutterbar gears, disc hubs, bearings, PTO components, drive systems and structural assemblies. Proper servicing requires accurate factory repair procedures, correct timing adjustments and systematic inspections. The OEM Factory Repair Service Manual (Publication No. 86578412) supplies professional workshop information for diagnosing faults, repairing major components, performing factory adjustments and restoring dependable mowing performance with confidence.

Machine Information

Factory Workshop Coverage

Professional Repair Procedures

• Repair modular cutterbar assemblies following OEM workshop procedures.
• Adjust cutterbar timing to maintain accurate blade overlap and clean cutting performance.
• Inspect gears, bearings and seals before reassembling cutterbar components.
• Service PTO shafts, universal joints and slip clutches using factory specifications.
• Diagnose hydraulic lifting problems through systematic pressure testing.
• Adjust flotation suspension for consistent ground pressure and improved mowing quality.
• Repair gear drive components using recommended factory service methods.
• Follow OEM torque values and adjustment specifications during every repair.
• Use exploded technical illustrations for accurate component identification.
• Perform complete operational testing after repairs to verify reliable mower performance.

Manual Specifications

Frequently Asked Questions

Which disc mower models are covered?

This factory repair manual covers the New Holland 615, 616 and 617 Disc Mower models.

Does the manual include complete cutterbar repairs?

Yes. It covers cutterbar disassembly, timing, bearing replacement, gear inspection, lubrication and complete rebuilding procedures.

Are PTO and driveline repairs included?

Yes. The manual provides detailed service procedures for PTO shafts, universal joints, slip clutches and driveline components.

Does the manual include hydraulic troubleshooting?

Yes. It explains hydraulic system diagnostics, lift cylinder servicing, pressure testing and repair procedures.

Who should use this workshop manual?

This OEM repair manual is intended for New Holland technicians, agricultural equipment workshops, commercial hay producers, farm maintenance personnel and experienced mechanics requiring official factory repair procedures.